CN111979496B - Machining process of oil pump rotor - Google Patents

Machining process of oil pump rotor Download PDF

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Publication number
CN111979496B
CN111979496B CN202010801692.5A CN202010801692A CN111979496B CN 111979496 B CN111979496 B CN 111979496B CN 202010801692 A CN202010801692 A CN 202010801692A CN 111979496 B CN111979496 B CN 111979496B
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oil pump
pump rotor
sintering
fixed
positioning
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CN111979496A (en
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赵原晋
赵海康
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Shanghai Yineixi Machinery Manufacturing Co ltd
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Yineixi Machinery Manufacturing Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/16—Both compacting and sintering in successive or repeated steps
    • B22F3/162—Machining, working after consolidation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/248—Thermal after-treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The application discloses oil pump rotor processing technology relates to the engine part field, and its technical scheme main points are, including following step, step one: the raw materials comprise 0.54-0.66% of C, 1.33-1.53% of Mo, 0-1.7% of Cu, 1.75-2.16% of Ni and Fe; step two: forming, namely putting the prepared alloy powder raw material into a die of a forming machine for press forming to obtain a formed green body; step three: pre-sintering, namely placing the formed green body into a sintering furnace for pre-sintering treatment; step four: and (5) primary finishing. Performing primary finish machining on the through hole through a milling machine, and fixing an oil pump rotor through an oil pump rotor tool in the process; step five: sintering and hardening, namely putting the product into a sintering and hardening furnace for sintering and hardening; step six: finish machining again, wherein finish machining is performed on the through hole again through a milling machine and two end faces of the rotor body are ground to be flat; step seven: and (6) tempering. The method has the effect of improving the finish machining precision of the oil pump rotor.

Description

Machining process of oil pump rotor
Technical Field
The application relates to the technical field of engine parts, in particular to a machining process of an oil pump rotor.
Background
The variable displacement vane type oil pump can adjust the oil supply capacity of the oil pump according to the actual requirement of an engine, so that unnecessary energy consumption of the oil pump is reduced. According to the relevant research reports: the vehicle engine adopting the variable displacement vane type oil pump can reduce the fuel consumption by 0.5 to 2 percent on average, and the variable displacement vane type oil pump can reduce the fuel consumption by about 3 percent aiming at the commercial vehicle engine which runs under the working condition of high rotating speed for a long time. Therefore, the application of the variable displacement vane type oil pump is a development trend.
The vane pump consists of rotor, stator, vanes, oil distributing disc, end cover and other parts, the stator has cylindrical hole in the inner surface and eccentric part between the rotor and the stator, and the system changes the eccentric distance of the rotor via the movement of the stator to change the displacement of the vane pump. The blades are embedded in the rotor groove and can flexibly slide in the rotor groove, and the tops of the blades are tightly attached to the inner surface of the stator under the action of centrifugal force generated when the rotor rotates and pressure oil introduced into the roots of the blades, so that a sealed working cavity is formed between each two adjacent blades, the oil distribution disc, the stator and the rotor. When the rotor rotates anticlockwise, the right blade extends outwards, the volume of the sealed working cavity is gradually increased, vacuum is generated, and oil is sucked in through the oil suction port and the window on the oil distribution disc. On the left side, the vanes retract inwards, the volume of the sealed cavity is gradually reduced, and oil in the sealed cavity is pressed out through another window of the oil distribution disc and the oil pressing port and is output to the system.
The existing oil pump rotor is prepared by a powder metallurgy method, so that although energy consumption and production cost can be reduced, the roughness after preparation is large, and finish machining needs to be carried out on the oil pump rotor.
Disclosure of Invention
Aiming at the defects in the prior art, the application aims to provide the machining process of the oil pump rotor, and the precision of finish machining of the oil pump rotor is improved.
In order to achieve the purpose, the application provides the following technical scheme: the machining process of the oil pump rotor is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: the raw materials comprise 0.54-0.66% of C, 1.33-1.53% of Mo, 0-1.7% of Cu, 1.75-2.16% of Ni and Fe;
step two: forming, namely putting the prepared alloy powder raw material into a die of a forming machine for press forming to obtain a formed green body;
step three: pre-sintering, namely placing the formed green body into a sintering furnace for pre-sintering treatment;
step four: and (5) primary finishing. Performing primary finish machining on the through hole through a milling machine, and fixing an oil pump rotor through an oil pump rotor tool in the process;
step five: sintering and hardening, namely putting the product into a sintering and hardening furnace for sintering and hardening;
step six: finish machining again, wherein finish machining is performed on the through hole again through a milling machine and two end faces of the rotor body are ground to be flat;
step seven: and (6) tempering.
By adopting the technical scheme, when the through hole is subjected to primary finish machining, the oil pump rotor is placed on the oil pump rotor tool to position and limit the rotor body, and then the oil pump rotor is subjected to milling finish machining, so that the machining precision is improved; secondary fine machining is carried out simultaneously; when two end faces of the oil pump rotor need to be ground, the oil pump rotor is clamped through the clamping tool, the two end faces of the oil pump rotor are ground through the double-face grinding machine, and through clamping of the clamping assembly, the fixing effect of the oil pump rotor is improved, and the machining efficiency can be improved.
The application is further configured to: the oil pump rotor tool comprises a base, a rotary table rotationally connected with the base, a fixed column vertically fixed on the rotary table and a positioning rod for positioning the rotary table; a limiting block is fixed on the base, positioning grooves with the same number as the through holes are formed in the rotary table, and the positioning rods can be inserted into the positioning grooves; the positioning rod is provided with an elastic piece which drives the positioning rod to rotate towards the direction close to the limiting block; the radius of the fixing column is the same as that of the shaft hole.
Through adopting above-mentioned technical scheme, the axle hole cup joints on the fixed column during the use, rotates the carousel and makes the locating lever insert in the constant head tank of seting up on the carousel. The position of the milling cutter is then adjusted so that the cutter is aligned with one of the through holes. After the cutter adjustment is finished, milling the through holes, and after one through hole is milled, retracting the milling cutter, rotating the turntable to enable the positioning rod to be inserted into the positioning groove adjacent to the previous positioning groove, so that the milling cutter can be aligned with the other through hole, and new through holes are milled without re-fixing the cutter; the error caused by frequent cutter fixing is reduced, and the processing precision of the through hole is improved.
The application is further configured to: the two sides of one end, close to the positioning groove, of the positioning rod are provided with inclined surfaces, and the sectional area of one end, close to the turntable, of the positioning rod is smaller than that of one end, far away from the turntable, of the positioning rod due to the inclined surfaces; the positioning groove is also provided with the same inclined plane.
Through adopting above-mentioned technical scheme, the inclined plane between locating lever and the constant head tank is mutually supported, and the locating lever of being convenient for rotates out or the locating lever changes over to the constant head tank in from the constant head tank.
The application is further configured to: the top of carousel is fixed with spacing, and spacing distance from the fixed column is the same with the distance of blade groove distance shaft hole.
By adopting the technical scheme, the limiting strips inserted into the blade grooves can limit the rotation of the oil pump rotor, so that the relative rotation between the oil pump rotor and the fixing column is prevented, and the precision of milling and grinding the through holes is further improved.
The application is further configured to: a plurality of grooves are vertically formed in the fixing column, clamping plates are connected in the grooves in a sliding mode and can be completely arranged in the grooves, and springs driving the clamping plates to slide towards the direction away from the grooves are fixed at the ends, close to the grooves, of the clamping plates.
Through adopting above-mentioned technical scheme, when the oil pump rotor cup joints on the fixed column after, the chucking board can with the shaft hole butt under the effect of spring force to increase the fixed effect of fixed column to oil pump rotor.
The application is further configured to: in the sixth step, a clamping tool is adopted when the two end faces of the rotor body are ground flat, and the clamping tool comprises a bottom plate, a guide pillar vertically fixed on the bottom plate, two connecting plates in sliding connection with the guide pillar and a synchronizing assembly for driving the two connecting plates to move towards or away from each other; the end that the connecting plate is close to each other is fixed with the bracing piece, and the one end that the bracing piece is kept away from the connecting plate is fixed with convex clamping plate.
By adopting the technical scheme, the two connecting plates move towards the direction close to each other under the driving of the synchronizing assembly, and the oil pump rotor positioned between the two clamping plates is clamped and positioned, so that the oil pump rotor is conveniently processed, and the grinding precision of the two ends of the oil pump rotor is improved.
The application is further configured to: the synchronous component comprises a support frame, a gear, two racks and a fixing component, wherein the support frame is positioned on one side of the connecting plate and fixed on the bottom plate, the gear is rotatably connected with the support frame, the two racks are meshed with the gear, and the fixing component is used for fixing the rotated gear.
Through adopting above-mentioned technical scheme, rack and gear engagement, gear revolve back, can synchronous motion with two racks of gear engagement, and then drive two connecting plates of sliding connection at guide pillar top and bottom and to the direction motion of being close to each other or keeping away from each other, be convenient for drive the synchronous motion of clamp plate, fixed subassembly is fixed the gear after the rotation to make the oil pump rotor can be by stable by the centre gripping in two clamp plates.
The application is further configured to: the fixed component comprises a connecting shaft which rotates coaxially with the gear, a connecting block which is fixed on the side wall of the support frame, a screw which is connected with the connecting block in a rotating mode and a clamping plate which is connected to one end, close to the connecting shaft, of the screw in a rotating mode.
Through adopting above-mentioned technical scheme, rotate the screw rod, drive the cardboard to the direction motion of connecting axle, increase the frictional force between connecting axle and the cardboard to make connecting axle pivoted resistance increase, make the connecting axle be difficult to rotate, fix the connecting axle through rotating the screw rod, be convenient for fix the connecting axle.
To sum up, the beneficial technical effect of this application does:
1. when the through hole is subjected to primary finish machining, the oil pump rotor is placed on an oil pump rotor tool, the rotor body is positioned and limited, and then the oil pump rotor is subjected to milling finish machining, so that the machining precision is improved; secondary fine machining is carried out simultaneously; when two end faces of the oil pump rotor need to be ground, the oil pump rotor is clamped through the clamping tool, the two end faces of the oil pump rotor are ground through the double-sided grinding machine, and through clamping of the clamping assembly, not only is the fixing effect on the oil pump rotor improved, but also the machining efficiency can be improved;
2. after the engine oil pump rotor is sleeved on the fixing column, the clamping plate can be abutted against the shaft hole under the action of the elastic force of the spring, so that the fixing effect of the fixing column on the engine oil pump rotor is improved;
3. the rack is meshed with the gear, and after the gear rotates, the two racks meshed with the gear can move synchronously, so that the two connecting plates connected to the top end and the bottom end of the guide pillar in a sliding mode are driven to move towards directions close to or far away from each other, synchronous movement of the clamping plates is facilitated to be driven, the fixing assembly fixes the rotated gear, and the oil pump rotor can be stably clamped in the two clamping plates.
Drawings
FIG. 1 is a front view of an oil pump rotor;
FIG. 2 is a schematic structural diagram of a tool embodying an oil pump rotor;
FIG. 3 is a schematic structural diagram showing a base;
FIG. 4 is an enlarged view of portion A of FIG. 2;
FIG. 5 is a schematic structural view of a clamping fixture;
FIG. 6 is a schematic diagram of a mechanism embodying a synchronizing assembly;
fig. 7 is an enlarged view of a portion B of fig. 6.
In the figure: 1. a rotor body; 11. a shaft hole; 12. a blade groove; 13. a through hole; 14. a groove; 2. a base; 21. a fixed block; 211. a rotating shaft; 3. a turntable; 31. positioning a groove; 32. a limiting strip; 4. fixing a column; 41. a groove; 42. a chucking plate; 421. chamfering; 43. a spring; 5. positioning a rod; 51. a limiting block; 52. a bevel; 6. a base plate; 7. a guide post; 71. a top plate; 8. a connecting plate; 81. a support bar; 82. a clamping plate; 9. a synchronization component; 91. a support frame; 911. a placement port; 92. a gear; 93. a rack; 94. a fixing assembly; 941. a connecting shaft; 942. connecting blocks; 943. a screw; 944. and (4) clamping the board.
Detailed Description
The present application is described in further detail below with reference to the attached figures.
Example (b): referring to fig. 1, an oil pump rotor, referring to fig. 1, includes a rotor body 1, a shaft hole 11, a plurality of (generally 7) vane grooves 12 opened uniformly in a circumferential direction, and through holes 13 provided at one ends of the vane grooves 12 near the shaft hole 11 and communicating with the vane grooves 12. Both ends of the rotor body 1 are also provided with grooves 14.
A machining process of an oil pump rotor comprises the following steps:
the method comprises the following steps: proportioning of raw materials. The raw materials comprise 0.54-0.66% of C, 1.33-1.53% of Mo, 0-1.7% of Cu, 1.75-2.16% of Ni and Fe.
Step two: and (4) forming. And putting the prepared alloy powder raw material into a die of a forming machine for press forming to obtain a formed green body.
Step three: and (4) pre-sintering. And placing the formed green body into a sintering furnace for pre-sintering treatment.
Step four: and (5) primary finishing. The through-hole 13 is subjected to primary finish machining by a milling machine. In the finish machining process, in order to improve the precision and efficiency of finish machining, the oil pump rotor is fixed through an oil pump rotor tool.
Referring to fig. 2, the oil pump rotor tool includes a base 2, a turntable 3 rotatably connected to the base 2, a fixing column 4 vertically fixed to the turntable 3, and a positioning rod 5 for positioning the rotating turntable 3. The radius of the fixing post 4 is the same as that of the shaft hole 11.
The side of base 2 is fixed with fixed block 21, and the one end that base 2 was kept away from to fixed block 21 is fixed with pivot 211, and locating lever 5 rotates with pivot 211 to be connected. One side of the positioning rod 5 is provided with a limiting block 51 fixed on the base 2. The rotating shaft 211 is provided with a torsion spring (elastic member), and the torsion spring drives the positioning rod 5 to rotate towards the direction close to the limiting block 51.
Referring to fig. 2 and 3, a limiting strip 32 is fixed at the top end of the rotary disc 3, and the distance from the limiting strip 32 to the fixed column 4 is the same as the distance from the blade groove 12 to the shaft hole 11. The spacing strips 32 can prevent the rotor body 1 and the fixing column 4 from rotating relatively. The side wall of the rotary table 3 is provided with a plurality of positioning grooves 31, and the number of the positioning grooves 31 is the same as that of the vane grooves 12. One end of the positioning rod 5 close to the positioning slot 31 can be inserted into the positioning slot 31 to position the rotating turntable 3. The two sides of one end of the positioning rod 5 close to the positioning slot 31 are provided with inclined surfaces 52, and the sectional area of one end of the positioning rod 5 close to the rotating disc 3 is smaller than that of one end far away from the rotating disc 3 due to the inclined surfaces 52. The positioning slot 31 is also provided with the same bevel 52 so that the cross-section of the positioning slot 31 is the same as the cross-section of the end of the positioning rod 5. The positioning slot 31 and the inclined surface 52 of the positioning rod 5 are matched with each other, so that the positioning rod 5 can conveniently enter or leave the positioning slot 31.
Referring to fig. 2 and 4, a plurality of grooves 41 are vertically formed on the fixing column 4, a clamping plate 42 is slidably connected in the groove 41, and the clamping plate 42 can be completely placed in the groove 41. A spring 43 fixedly connected with the groove 41 is fixed at one end of the chucking plate 42 close to the groove 41, and the spring 43 drives the chucking plate 42 to slide towards the direction far away from the groove 41. The top end of the clamping plate 42 is provided with a chamfer 421, and the chamfer 421 is positioned at the side of the clamping plate 42 far away from the groove 41.
During the use, place rotor body 1 on carousel 3, in fixed column 4 inserted shaft hole 11, spacing strip 32 inserted blade groove 12 to rotating carousel 3 makes locating lever 5 insert in the constant head tank 31 of seting up on carousel 3. The position of the milling cutter is then adjusted so that the cutter is aligned with one of the through holes 13. After the cutter adjustment is completed, the through hole 13 is milled and ground, after the milling and grinding of one through hole 13 are completed, the milling cutter retreats and rotates the turntable 3, so that the positioning rod 5 is inserted into the positioning groove 31 adjacent to the previous positioning groove 31, the milling cutter can be aligned with the other through hole 13, the cutter does not need to be fixed again, and the new through hole 13 is milled and ground.
Step five: and (5) sintering and hardening. And (4) putting the product into a sintering hardening furnace for sintering hardening, and adopting nitrogen as protective gas.
Step six: and finishing again. The through-hole 13 is finish-machined again by the milling machine and both end faces of the rotor body 1 are ground flat. Finish machining of the through hole 13 again continues to use the oil pump rotor tool; and the grinding of the two end surfaces adopts a clamping tool.
Referring to fig. 5, the clamping fixture includes a bottom plate 6, a guide post 7 vertically fixed on the bottom plate 6, two connecting plates 8 slidably connected to the guide post 7, and a synchronizing assembly 9 for driving the two connecting plates 8 to move toward or away from each other.
A supporting rod 81 is fixed at one end of the connecting plate 8 close to each other, a clamping plate 82 is fixed at one end of the supporting rod 81 far from the connecting plate 8, the clamping plate 82 is arc-shaped, and the rotor body 1 is positioned between the two clamping plates 82 and clamped by the clamping plates 82; the length of the clamping plate 82 is the same as the length of the rotor body 1. A top plate 71 is fixed to the top end of the guide post 7, and the top plate 71 limits the connecting plate 8 to prevent the connecting plate 8 from being detached from the guide post 7 from the top end of the guide post 7.
Referring to fig. 5 and 6, the synchronizing assembly 9 includes a support bracket 91 located at one side of the connecting plate 8 and fixed to the base plate 6, a gear 92 rotatably connected to the support bracket 91, two racks 93 engaged with the gear 92, and a fixing assembly 94 fixing the rotated gear 92. The top of support frame 91 has been seted up and has been placed mouth 911, and gear 92 rotates to be connected in placing mouth 911, and rack 93 can pass and place mouth 911.
The two racks 93 are respectively fixedly connected with the two connecting plates 8, the two racks 93 are respectively positioned on two sides of the gear 92, and after the gear 92 rotates, the two racks meshed with the gear 92 can move towards the direction away from or close to each other, so that the two connecting plates 8 are driven to move towards the direction away from or close to each other; when the two connecting plates 8 are moved toward each other, the two clamping plates 82 clamp and fix the rotor body 1 located between the clamping plates 82. The rotated gear 92 is secured by a securing assembly 94.
Referring to fig. 6 and 7, the fixing member 94 includes a connecting shaft 941 coaxially rotatable with the gear 92, a connecting block 942 fixed to a side wall of the supporting frame 91, a screw 943 rotatably connected to the connecting block 942, and a clamping plate 944 rotatably connected to an end of the screw 943 near the connecting shaft 941. The clamp plate 944 is arc-shaped, and one side close to the connecting shaft 941 can abut against the connecting shaft 941. The rotating screw 943 can drive the chuck plate 944 to move in a direction close to the connecting shaft 941, so that the friction force between the chuck plate 944 and the connecting shaft 941 is increased, and the connecting shaft 941 is fixed.
After being clamped by the two clamping plates 82, the rotor body 1 is placed on a double-end-face grinding machine, and two end faces are ground flat.
Step seven: and (6) tempering. To improve plasticity and toughness.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The machining process of the oil pump rotor is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
the method comprises the following steps: the raw materials comprise 0.54-0.66% of C, 1.33-1.53% of Mo, 0-1.7% of Cu, 1.75-2.16% of Ni and Fe;
step two: forming, namely putting the prepared alloy powder raw material into a die of a forming machine for press forming to obtain a formed green body;
step three: pre-sintering, namely placing the formed green body into a sintering furnace for pre-sintering treatment;
step four: primary finish machining;
performing primary finish machining on the through hole (13) through a milling machine, and fixing an oil pump rotor through an oil pump rotor tool in the process;
step five: sintering and hardening, namely putting the product into a sintering and hardening furnace for sintering and hardening;
step six: finish machining again, wherein finish machining is performed on the through hole (13) again through a milling machine, and two end faces of the rotor body (1) are ground to be flat;
step seven: tempering;
the oil pump rotor tool comprises a base (2), a rotary table (3) rotationally connected with the base (2), a fixed column (4) vertically fixed on the rotary table (3) and a positioning rod (5) for positioning the rotary table (3); a limiting block (51) is fixed on the base (2), positioning grooves (31) with the same number as the through holes (13) are formed in the rotary disc (3), and the positioning rods (5) can be inserted into the positioning grooves (31); the positioning rod (5) is provided with an elastic piece which drives the positioning rod (5) to rotate towards the direction close to the limiting block (51); the radius of the fixed column (4) is the same as that of the shaft hole (11);
in the sixth step, a clamping tool is adopted when the two end faces of the rotor body (1) are ground to be flat, and the clamping tool comprises a bottom plate (6), a guide post (7) vertically fixed on the bottom plate (6), two connecting plates (8) in sliding connection with the guide post (7) and a synchronizing assembly (9) for driving the two connecting plates (8) to move towards or away from each other; one end of the connecting plate (8) close to each other is fixed with a supporting rod (81), and one end of the supporting rod (81) far away from the connecting plate (8) is fixed with a circular arc-shaped clamping plate (82).
2. The oil pump rotor machining process according to claim 1, characterized in that: two sides of one end, close to the positioning groove (31), of the positioning rod (5) are provided with inclined planes (52), and the sectional area of one end, close to the turntable (3), of the positioning rod (5) is smaller than that of one end, far away from the turntable (3), of the inclined planes (52); the positioning groove (31) is also provided with the same inclined surface (52).
3. The oil pump rotor machining process according to claim 1, characterized in that: the top of carousel (3) is fixed with spacing strip (32), and spacing strip (32) apart from the distance of fixed column (4) and blade groove (12) apart from the distance of shaft hole (11) the same.
4. The oil pump rotor machining process according to claim 1, characterized in that: a plurality of grooves (41) are vertically formed in the fixing column (4), a clamping plate (42) is connected to the grooves (41) in a sliding mode, the clamping plate (42) can be completely arranged in the grooves (41), and a spring (43) which drives the clamping plate (42) to slide in the direction away from the grooves (41) is fixed to one end, close to the grooves (41), of the clamping plate (42).
5. The oil pump rotor machining process according to claim 1, characterized in that: the synchronous component (9) comprises a support frame (91) which is positioned on one side of the connecting plate (8) and fixed on the bottom plate (6), a gear (92) rotationally connected with the support frame (91), two racks (93) meshed with the gear (92) and a fixing component (94) for fixing the rotated gear (92).
6. The oil pump rotor machining process according to claim 5, characterized in that: fixed subassembly (94) include with gear (92) coaxial pivoted connecting axle (941), fix connecting block (942) at support frame (91) lateral wall, rotate screw rod (943) of being connected with connecting block (942) and rotate and connect cardboard (944) that is close to connecting axle (941) one end at screw rod (943).
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192071A (en) * 2013-04-23 2013-07-10 南京浩德粉末冶金有限公司 Powder metallurgical formulas for internal and external rotors of hydraulic slippage pump and manufacturing method of internal and external rotors of hydraulic slippage pump
CN104022606A (en) * 2014-06-10 2014-09-03 何华琼 Rotor tool machine
CN109702207A (en) * 2018-12-28 2019-05-03 江苏智造新材有限公司 Engine blade formula becomes displacement oil pump rotor and its method for preparing powder metallurgy

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2740692B2 (en) * 1990-09-13 1998-04-15 アルプス電気株式会社 Mold

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192071A (en) * 2013-04-23 2013-07-10 南京浩德粉末冶金有限公司 Powder metallurgical formulas for internal and external rotors of hydraulic slippage pump and manufacturing method of internal and external rotors of hydraulic slippage pump
CN104022606A (en) * 2014-06-10 2014-09-03 何华琼 Rotor tool machine
CN109702207A (en) * 2018-12-28 2019-05-03 江苏智造新材有限公司 Engine blade formula becomes displacement oil pump rotor and its method for preparing powder metallurgy

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